If you have to do repairs for your Lifan LF50QGY then it will always be a good idea to own a Workshop Manual for personal reference in the event that you want to know how to strip off a certain component for instance the Brake Pads and fit it again successfully.
Lifan LF50QGY Workshop Manuals provides identifiable diagnostic details on your vehicle so if something is broken it will help you determine what the issue is and some ways to fix it. You can then evaluate if you can do this by yourself or in case the job is simply too big you are able to make a booking for your LF50QGY into a decent repair garage.
Lifan LF50QGY manual